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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
PARTICIPATORY GIS FOR SOIL CONSERVATION IN PHEWA WATERSHED OF
NEPAL
Krishna Prasad Bhandari
Western Region Campus, Institute of Engineering, Tribhuvan University, Pokhara, Nepal
Email:bhandarikrishna@hotmail.com.
Commission VIII, WG VIII/8
KEY WORDS: Participatory Geographic information, Local Knowledge, Stakeholders, RUSLE,
Soil erosion risk map
ABSTRACT
Participatory Geographic Information Systems (PGIS) can integrate participatory methodologies
with geo-spatial technologies for the representation of characteristic of particular place. Over the
last decade, researchers use this method to integrate the local knowledge of community within a
GIS and Society conceptual framework. Participatory GIS are tailored to answer specific
geographic questions at the local level and their modes of implementation vary considerably across
space, ranging from field-based, qualitative approaches to more complex web-based applications.
These broad ranges of techniques, PGIS are becoming an effective methodology for incorporating
community local knowledge into complex spatial decision-making processes. The objective of this
study is to reduce the soil erosion by formulating the general rule for the soil conservation by
participation of the stakeholders. The poster was prepared by satellite image, topographic map and
Arc GIS software including the local knowledge. The data were collected from the focus group
discussion and the individual questionnaire for incorporate the local knowledge and use it to find
the risk map on the basis of economic, social and manageable physical factors for the sensitivity
analysis. The soil erosion risk map is prepared by the physical factors Rainfall-runoff erosivity, Soil
erodibility, Slope length, Slope steepness, Cover-management, Conservation practice using RUSLE
model. After the comparison and discussion among stakeholders, researcher and export group, and
the soil erosion risk map showed that socioeconomic, social and manageable physical factors
management can reduce the soil erosion. The study showed that the preparation of the poster GIS
map and implement this in the watershed area could reduce the soil erosion in the study area
compared to the existing national policy.
